LARGE
A panorama taken of the fort of San Fernando. Located at the Boca Chica entrance to Cartagena Bay this fort with it's smaller sister fort on the other side of the entrance (previous photo) were an impressive obstacle to anyone trying to gain access to the city. A large chain was sometimes stretched between the two forts.
The seaward entrance to the fort can be seen in the center of the structure. A small landing overlooked by two menacing canon ports with only a few yards of water separating them.
Some interesting reading: en.wikipedia.org/wiki/Battle_of_Cartagena_de_Indias
The defense of Cartagen in 1741 by Blas de Lezo and the victory of his small force (with help from Yellow Fever) against an enormous British invasion force is largely forgotten today, but it cemented the Spanish hold on the Caribbean for another century. Admiral Vernon destroyed the fort on this location which was named San Luis in 1741. San Fernando was built after the battle near the site of the old fort.
For those of you who think special equipment is necessary to take panoramas this one was made from nine separate photos taken with a 200mm lens from a small rolling boat. Photo shop did a pretty good job of stitching it together with no special effort on my part.